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libs_rc4.js.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>libs/rc4.js - Documentation</title>
<script src="scripts/prettify/prettify.js"></script>
<script src="scripts/prettify/lang-css.js"></script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc.css">
<script src="scripts/nav.js" defer></script>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<input type="checkbox" id="nav-trigger" class="nav-trigger" />
<label for="nav-trigger" class="navicon-button x">
<div class="navicon"></div>
</label>
<label for="nav-trigger" class="overlay"></label>
<nav >
<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="GState.html">GState</a></li><li><a href="jsPDF.html">jsPDF</a><ul class='methods'><li data-type='method'><a href="jsPDF.html#addFont">addFont</a></li><li data-type='method'><a href="jsPDF.html#addGState">addGState</a></li><li data-type='method'><a href="jsPDF.html#addPage">addPage</a></li><li data-type='method'><a href="jsPDF.html#addPattern">addPattern</a></li><li data-type='method'><a href="jsPDF.html#beginFormObject">beginFormObject</a></li><li data-type='method'><a href="jsPDF.html#circle">circle</a></li><li data-type='method'><a href="jsPDF.html#clip">clip</a></li><li data-type='method'><a href="jsPDF.html#clipEvenOdd">clipEvenOdd</a></li><li data-type='method'><a href="jsPDF.html#close">close</a></li><li data-type='method'><a href="jsPDF.html#comment">comment</a></li><li data-type='method'><a href="jsPDF.html#curveTo">curveTo</a></li><li data-type='method'><a href="jsPDF.html#deletePage">deletePage</a></li><li data-type='method'><a href="jsPDF.html#discardPath">discardPath</a></li><li data-type='method'><a href="jsPDF.html#doFormObject">doFormObject</a></li><li data-type='method'><a href="jsPDF.html#ellipse">ellipse</a></li><li data-type='method'><a href="jsPDF.html#endFormObject">endFormObject</a></li><li data-type='method'><a href="jsPDF.html#fill">fill</a></li><li data-type='method'><a href="jsPDF.html#fillEvenOdd">fillEvenOdd</a></li><li data-type='method'><a href="jsPDF.html#fillStroke">fillStroke</a></li><li data-type='method'><a href="jsPDF.html#fillStrokeEvenOdd">fillStrokeEvenOdd</a></li><li data-type='method'><a href="jsPDF.html#getCharSpace">getCharSpace</a></li><li data-type='method'><a href="jsPDF.html#getCreationDate">getCreationDate</a></li><li data-type='method'><a href="jsPDF.html#getDrawColor">getDrawColor</a></li><li data-type='method'><a href="jsPDF.html#getFileId">getFileId</a></li><li data-type='method'><a href="jsPDF.html#getFillColor">getFillColor</a></li><li data-type='method'><a href="jsPDF.html#getFont">getFont</a></li><li data-type='method'><a href="jsPDF.html#getFontList">getFontList</a></li><li data-type='method'><a href="jsPDF.html#getFontSize">getFontSize</a></li><li data-type='method'><a href="jsPDF.html#getFormObject">getFormObject</a></li><li data-type='method'><a href="jsPDF.html#getLineHeightFactor">getLineHeightFactor</a></li><li data-type='method'><a href="jsPDF.html#getLineWidth">getLineWidth</a></li><li data-type='method'><a href="jsPDF.html#getR2L">getR2L</a></li><li data-type='method'><a href="jsPDF.html#getTextColor">getTextColor</a></li><li data-type='method'><a href="jsPDF.html#insertPage">insertPage</a></li><li data-type='method'><a href="jsPDF.html#line">line</a></li><li data-type='method'><a href="jsPDF.html#lines">lines</a></li><li data-type='method'><a href="jsPDF.html#lineTo">lineTo</a></li><li data-type='method'><a href="jsPDF.html#movePage">movePage</a></li><li data-type='method'><a href="jsPDF.html#moveTo">moveTo</a></li><li data-type='method'><a href="jsPDF.html#output">output</a></li><li data-type='method'><a href="jsPDF.html#path">path</a></li><li data-type='method'><a href="jsPDF.html#rect">rect</a></li><li data-type='method'><a href="jsPDF.html#restoreGraphicsState">restoreGraphicsState</a></li><li data-type='method'><a href="jsPDF.html#roundedRect">roundedRect</a></li><li data-type='method'><a href="jsPDF.html#save">save</a></li><li data-type='method'><a href="jsPDF.html#saveGraphicsState">saveGraphicsState</a></li><li data-type='method'><a href="jsPDF.html#setCharSpace">setCharSpace</a></li><li data-type='method'><a href="jsPDF.html#setCreationDate">setCreationDate</a></li><li data-type='method'><a href="jsPDF.html#setCurrentTransformationMatrix">setCurrentTransformationMatrix</a></li><li data-type='method'><a href="jsPDF.html#setDisplayMode">setDisplayMode</a></li><li data-type='method'><a href="jsPDF.html#setDocumentProperties">setDocumentProperties</a></li><li data-type='method'><a href="jsPDF.html#setDrawColor">setDrawColor</a></li><li data-type='method'><a href="jsPDF.html#setFileId">setFileId</a></li><li data-type='method'><a href="jsPDF.html#setFillColor">setFillColor</a></li><li data-type='method'><a href="jsPDF.html#setFont">setFont</a></li><li data-type='method'><a href="jsPDF.html#setFontSize">setFontSize</a></li><li data-type='method'><a href="jsPDF.html#setGState">setGState</a></li><li data-type='method'><a href="jsPDF.html#setLineCap">setLineCap</a></li><li data-type='method'><a href="jsPDF.html#setLineDashPattern">setLineDashPattern</a></li><li data-type='method'><a href="jsPDF.html#setLineHeightFactor">setLineHeightFactor</a></li><li data-type='method'><a href="jsPDF.html#setLineJoin">setLineJoin</a></li><li data-type='method'><a href="jsPDF.html#setLineMiterLimit">setLineMiterLimit</a></li><li data-type='method'><a href="jsPDF.html#setLineWidth">setLineWidth</a></li><li data-type='method'><a href="jsPDF.html#setPage">setPage</a></li><li data-type='method'><a href="jsPDF.html#setPrecision">setPrecision</a></li><li data-type='method'><a href="jsPDF.html#setR2L">setR2L</a></li><li data-type='method'><a href="jsPDF.html#setTextColor">setTextColor</a></li><li data-type='method'><a href="jsPDF.html#stroke">stroke</a></li><li data-type='method'><a href="jsPDF.html#text">text</a></li><li data-type='method'><a href="jsPDF.html#triangle">triangle</a></li><li data-type='method'><a href="jsPDF.html#~addGState">addGState</a></li><li data-type='method'><a href="jsPDF.html#~addPattern">addPattern</a></li><li data-type='method'><a href="jsPDF.html#~hasHotfix">hasHotfix</a></li><li data-type='method'><a href="jsPDF.html#~Point">Point</a></li><li data-type='method'><a href="jsPDF.html#~Rectangle">Rectangle</a></li><li data-type='method'><a href="jsPDF.html#~RenderTarget">RenderTarget</a></li></ul></li><li><a href="jsPDF-API.GState.html">GState</a></li><li><a href="jsPDF-API.ShadingPattern.html">ShadingPattern</a></li><li><a href="jsPDF-API.TilingPattern.html">TilingPattern</a></li><li><a href="Matrix.html">Matrix</a><ul class='methods'><li data-type='method'><a href="Matrix.html#applyToPoint">applyToPoint</a></li><li data-type='method'><a href="Matrix.html#applyToRectangle">applyToRectangle</a></li><li data-type='method'><a href="Matrix.html#clone">clone</a></li><li data-type='method'><a href="Matrix.html#decompose">decompose</a></li><li data-type='method'><a href="Matrix.html#inversed">inversed</a></li><li data-type='method'><a href="Matrix.html#join">join</a></li><li data-type='method'><a href="Matrix.html#multiply">multiply</a></li><li data-type='method'><a href="Matrix.html#toString">toString</a></li></ul></li><li><a href="module-AcroForm-AcroFormButton.html">AcroFormButton</a></li><li><a href="module-AcroForm-AcroFormCheckBox.html">AcroFormCheckBox</a></li><li><a href="module-AcroForm-AcroFormChoiceField.html">AcroFormChoiceField</a></li><li><a href="module-AcroForm-AcroFormComboBox.html">AcroFormComboBox</a><ul class='methods'><li data-type='method'><a href="module-AcroForm-AcroFormComboBox.html#addOption">addOption</a></li><li data-type='method'><a href="module-AcroForm-AcroFormComboBox.html#getOptions">getOptions</a></li><li data-type='method'><a href="module-AcroForm-AcroFormComboBox.html#removeOption">removeOption</a></li><li data-type='method'><a href="module-AcroForm-AcroFormComboBox.html#setOptions">setOptions</a></li></ul></li><li><a href="module-AcroForm-AcroFormEditBox.html">AcroFormEditBox</a><ul class='methods'><li data-type='method'><a href="module-AcroForm-AcroFormEditBox.html#addOption">addOption</a></li><li data-type='method'><a href="module-AcroForm-AcroFormEditBox.html#getOptions">getOptions</a></li><li data-type='method'><a href="module-AcroForm-AcroFormEditBox.html#removeOption">removeOption</a></li><li data-type='method'><a href="module-AcroForm-AcroFormEditBox.html#setOptions">setOptions</a></li></ul></li><li><a href="module-AcroForm-AcroFormField.html">AcroFormField</a></li><li><a href="module-AcroForm-AcroFormListBox.html">AcroFormListBox</a><ul class='methods'><li data-type='method'><a href="module-AcroForm-AcroFormListBox.html#addOption">addOption</a></li><li data-type='method'><a href="module-AcroForm-AcroFormListBox.html#getOptions">getOptions</a></li><li data-type='method'><a href="module-AcroForm-AcroFormListBox.html#removeOption">removeOption</a></li><li data-type='method'><a href="module-AcroForm-AcroFormListBox.html#setOptions">setOptions</a></li></ul></li><li><a href="module-AcroForm-AcroFormPasswordField.html">AcroFormPasswordField</a></li><li><a href="module-AcroForm-AcroFormPDFObject.html">AcroFormPDFObject</a></li><li><a href="module-AcroForm-AcroFormPushButton.html">AcroFormPushButton</a></li><li><a href="module-AcroForm-AcroFormRadioButton.html">AcroFormRadioButton</a></li><li><a href="module-AcroForm-AcroFormTextField.html">AcroFormTextField</a></li><li><a href="module-canvas-Canvas.html">Canvas</a></li></ul><h3>Modules</h3><ul><li><a href="module-AcroForm.html">AcroForm</a><ul class='methods'><li data-type='method'><a href="module-AcroForm.html#addField">addField</a></li><li data-type='method'><a href="module-AcroForm.html#~AcroFormDictionaryCallback">AcroFormDictionaryCallback</a></li><li data-type='method'><a href="module-AcroForm.html#~calculateFontSpace">calculateFontSpace</a></li><li data-type='method'><a href="module-AcroForm.html#~createAnnotationReference">createAnnotationReference</a></li><li data-type='method'><a href="module-AcroForm.html#~createFieldCallback">createFieldCallback</a></li></ul></li><li><a href="module-addImage.html">addImage</a><ul class='methods'><li data-type='method'><a href="module-addImage.html#~addImage">addImage</a></li><li data-type='method'><a href="module-addImage.html#~arrayBufferToBinaryString">arrayBufferToBinaryString</a></li><li data-type='method'><a href="module-addImage.html#~binaryStringToUint8Array">binaryStringToUint8Array</a></li><li data-type='method'><a href="module-addImage.html#~convertBase64ToBinaryString">convertBase64ToBinaryString</a></li><li data-type='method'><a href="module-addImage.html#~extractImageFromDataUrl">extractImageFromDataUrl</a></li><li data-type='method'><a href="module-addImage.html#~getImageFileTypeByImageData">getImageFileTypeByImageData</a></li><li data-type='method'><a href="module-addImage.html#~getImageProperties">getImageProperties</a></li><li data-type='method'><a href="module-addImage.html#~isArrayBuffer">isArrayBuffer</a></li><li data-type='method'><a href="module-addImage.html#~isArrayBufferView">isArrayBufferView</a></li><li data-type='method'><a href="module-addImage.html#~sHashCode">sHashCode</a></li><li data-type='method'><a href="module-addImage.html#~supportsArrayBuffer">supportsArrayBuffer</a></li><li data-type='method'><a href="module-addImage.html#~validateStringAsBase64">validateStringAsBase64</a></li></ul></li><li><a href="module-annotations.html">annotations</a><ul class='methods'><li data-type='method'><a href="module-annotations.html#~createAnnotation">createAnnotation</a></li><li data-type='method'><a href="module-annotations.html#~getTextWidth">getTextWidth</a></li><li data-type='method'><a href="module-annotations.html#~link">link</a></li><li data-type='method'><a href="module-annotations.html#~textWithLink">textWithLink</a></li></ul></li><li><a href="module-arabic.html">arabic</a><ul class='methods'><li data-type='method'><a href="module-arabic.html#~processArabic">processArabic</a></li></ul></li><li><a href="module-autoprint.html">autoprint</a><ul class='methods'><li data-type='method'><a href="module-autoprint.html#~autoPrint">autoPrint</a></li></ul></li><li><a href="module-bmp_support.html">bmp_support</a></li><li><a href="module-canvas.html">canvas</a><ul class='methods'><li data-type='method'><a href="module-canvas.html#~getContext">getContext</a></li><li data-type='method'><a href="module-canvas.html#~toDataURL">toDataURL</a></li></ul></li><li><a href="module-cell.html">cell</a><ul class='methods'><li data-type='method'><a href="module-cell.html#~cell">cell</a></li><li data-type='method'><a href="module-cell.html#~cellAddPage">cellAddPage</a></li><li data-type='method'><a href="module-cell.html#~getTextDimensions">getTextDimensions</a></li><li data-type='method'><a href="module-cell.html#~printHeaderRow">printHeaderRow</a></li><li data-type='method'><a href="module-cell.html#~setHeaderFunction">setHeaderFunction</a></li><li data-type='method'><a href="module-cell.html#~setTableHeaderRow">setTableHeaderRow</a></li><li data-type='method'><a href="module-cell.html#~table">table</a></li></ul></li><li><a href="module-context2d.html">context2d</a><ul class='methods'><li data-type='method'><a href="module-context2d.html#~arc">arc</a></li><li data-type='method'><a href="module-context2d.html#~arcTo">arcTo</a></li><li data-type='method'><a href="module-context2d.html#~beginPath">beginPath</a></li><li data-type='method'><a href="module-context2d.html#~bezierCurveTo">bezierCurveTo</a></li><li data-type='method'><a href="module-context2d.html#~clearRect">clearRect</a></li><li data-type='method'><a href="module-context2d.html#~clip">clip</a></li><li data-type='method'><a href="module-context2d.html#~closePath">closePath</a></li><li data-type='method'><a href="module-context2d.html#~createArc">createArc</a></li><li data-type='method'><a href="module-context2d.html#~fillRect">fillRect</a></li><li data-type='method'><a href="module-context2d.html#~fillText">fillText</a></li><li data-type='method'><a href="module-context2d.html#~getLineDash">getLineDash</a></li><li data-type='method'><a href="module-context2d.html#~lineTo">lineTo</a></li><li data-type='method'><a href="module-context2d.html#~measureText">measureText</a></li><li data-type='method'><a href="module-context2d.html#~moveTo">moveTo</a></li><li data-type='method'><a href="module-context2d.html#~quadraticCurveTo">quadraticCurveTo</a></li><li data-type='method'><a href="module-context2d.html#~rect">rect</a></li><li data-type='method'><a href="module-context2d.html#~restore">restore</a></li><li data-type='method'><a href="module-context2d.html#~rotate">rotate</a></li><li data-type='method'><a href="module-context2d.html#~save">save</a></li><li data-type='method'><a href="module-context2d.html#~scale">scale</a></li><li data-type='method'><a href="module-context2d.html#~setLineDash">setLineDash</a></li><li data-type='method'><a href="module-context2d.html#~setTransform">setTransform</a></li><li data-type='method'><a href="module-context2d.html#~stroke">stroke</a></li><li data-type='method'><a href="module-context2d.html#~strokeRect">strokeRect</a></li><li data-type='method'><a href="module-context2d.html#~strokeText">strokeText</a></li><li data-type='method'><a href="module-context2d.html#~toDataURL">toDataURL</a></li><li data-type='method'><a href="module-context2d.html#~transform">transform</a></li><li data-type='method'><a href="module-context2d.html#~translate">translate</a></li></ul></li><li><a href="module-fileloading.html">fileloading</a><ul class='methods'><li data-type='method'><a href="module-fileloading.html#~loadFile">loadFile</a></li><li data-type='method'><a href="module-fileloading.html#~loadImageFile">loadImageFile</a></li></ul></li><li><a href="module-gif_support.html">gif_support</a></li><li><a href="module-html.html">html</a><ul class='methods'><li data-type='method'><a href="module-html.html#~html">html</a></li></ul></li><li><a href="module-javascript.html">javascript</a><ul class='methods'><li data-type='method'><a href="module-javascript.html#~addJS">addJS</a></li></ul></li><li><a href="module-jpeg_support.html">jpeg_support</a></li><li><a href="module-outline.html">outline</a></li><li><a href="module-png_support.html">png_support</a></li><li><a href="module-rgba_support.html">rgba_support</a></li><li><a href="module-setLanguage.html">setLanguage</a><ul class='methods'><li data-type='method'><a href="module-setLanguage.html#~setLanguage">setLanguage</a></li></ul></li><li><a href="module-split_text_to_size.html">split_text_to_size</a><ul class='methods'><li data-type='method'><a href="module-split_text_to_size.html#~getCharWidthsArray">getCharWidthsArray</a></li><li data-type='method'><a href="module-split_text_to_size.html#~getStringUnitWidth">getStringUnitWidth</a></li><li data-type='method'><a href="module-split_text_to_size.html#~splitTextToSize">splitTextToSize</a></li></ul></li><li><a href="module-standard_fonts_metrics.html">standard_fonts_metrics</a></li><li><a href="module-svg.html">svg</a><ul class='methods'><li data-type='method'><a href="module-svg.html#~addSvgAsImage">addSvgAsImage</a></li></ul></li><li><a href="module-total_pages.html">total_pages</a><ul class='methods'><li data-type='method'><a href="module-total_pages.html#~putTotalPages">putTotalPages</a></li></ul></li><li><a href="module-ttfsupport.html">ttfsupport</a></li><li><a href="module-utf8.html">utf8</a></li><li><a href="module-vFS.html">vFS</a><ul class='methods'><li data-type='method'><a href="module-vFS.html#~addFileToVFS">addFileToVFS</a></li><li data-type='method'><a href="module-vFS.html#~existsFileInVFS">existsFileInVFS</a></li><li data-type='method'><a href="module-vFS.html#~getFileFromVFS">getFileFromVFS</a></li></ul></li><li><a href="module-viewerpreferences.html">viewerpreferences</a><ul class='methods'><li data-type='method'><a href="module-viewerpreferences.html#~viewerPreferences">viewerPreferences</a></li></ul></li><li><a href="module-webp_support.html">webp_support</a></li><li><a href="module-xmp_metadata.html">xmp_metadata</a><ul class='methods'><li data-type='method'><a href="module-xmp_metadata.html#~addMetadata">addMetadata</a></li></ul></li></ul><h3>Global</h3><ul><li><a href="global.html#constructor">constructor</a></li><li><a href="global.html#encryptor">encryptor</a></li><li><a href="global.html#hexToBytes">hexToBytes</a></li><li><a href="global.html#lsbFirstWord">lsbFirstWord</a></li><li><a href="global.html#mapArrayBufferViews">mapArrayBufferViews</a></li><li><a href="global.html#md5cycle">md5cycle</a></li><li><a href="global.html#processOwnerPassword">processOwnerPassword</a></li><li><a href="global.html#rc4">rc4</a></li><li><a href="global.html#repeat">repeat</a></li><li><a href="global.html#RGBColor">RGBColor</a></li><li><a href="global.html#SetsoptionsforBidiconversion">Sets options for Bidi conversion</a></li><li><a href="global.html#toHexString">toHexString</a></li><li><a href="global.html#toPDFName">toPDFName</a></li></ul>
</nav>
<div id="main">
<h1 class="page-title">libs/rc4.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* @license
* FPDF is released under a permissive license: there is no usage restriction.
* You may embed it freely in your application (commercial or not), with or
* without modifications.
*
* Reference: http:https://www.fpdf.org/en/script/script37.php
*/
function repeat(str, num) {
return new Array(num + 1).join(str);
}
/**
* Converts a byte string to a hex string
*
* @name rc4
* @function
* @param {string} key Byte string of encryption key
* @param {string} data Byte string of data to be encrypted
* @returns {string} Encrypted string
*/
function rc4(key, data) {
var lastKey, lastState;
if (key !== lastKey) {
var k = repeat(key, ((256 / key.length) >> 0) + 1);
var state = [];
for (var i = 0; i < 256; i++) {
state[i] = i;
}
var j = 0;
for (var i = 0; i < 256; i++) {
var t = state[i];
j = (j + t + k.charCodeAt(i)) % 256;
state[i] = state[j];
state[j] = t;
}
lastKey = key;
lastState = state;
} else {
state = lastState;
}
var length = data.length;
var a = 0;
var b = 0;
var out = "";
for (var i = 0; i < length; i++) {
a = (a + 1) % 256;
t = state[a];
b = (b + t) % 256;
state[a] = state[b];
state[b] = t;
k = state[(state[a] + state[b]) % 256];
out += String.fromCharCode(data.charCodeAt(i) ^ k);
}
return out;
}
export { rc4 };
</code></pre>
</article>
</section>
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Documentation generated by <a href="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/jsdoc3/jsdoc">JSDoc 3.6.4</a> on Fri Jan 28 2022 16:38:20 GMT+0100 (Central European Standard Time) using the <a href="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/clenemt/docdash">docdash</a> theme.
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